DP TX as a LT

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I have a close tank 2 M height. I want measure tank level by DP Pressure tx, how i can calibrate.

The calibration ought to be traceble back to national or international standards via the supplier's documentation supplied with it.

The range can be set by following the manufacturer's instructions supplied with it.

2m height of tank,to safe level inside tank about 1.8m ( 1800 mm).

if you meassure water (sg=1)

span = h x sg ( 1800 x 1 = 1800mmwc)

zero = height of high tappoint to min level (z = 0 m ) x sg

= 0 x 1 = 0mmwc

range transmitter = zero to span + zero ( 0 mmwc to 1800 mmwc)

equal with LRV = 0 mmwc and URV = 1800 mmwc

with no pressure transmitter out put 4 mA.apply pressure to High side 1800 mmwc out will be 20 mA.

LRV & URV

There is many way to calibrate it as per impulsing of DPLT.

If you having a transmitter impulsing as per standars, Set the LRV (Zero adjustment) at H-Side for 2000 MMWC to get 4 mA dc current O/P from Transmitter & Set the URV (Span adjustment) at 0 MMWC differential pressure to get 20 mA dc current O/P from Transmitter.